Inspection lift



May 8, 1923. t 1,454,677

c. 1 HusToN INSPECTION LIFT Filedv 5 2 Sheets-Sheet l L. Hm

May 8, 1923.

c. L. HusoN INSPECTION LIFT m 5 S n.. lLlI- LJ W v ,Q Q v A 7W? N S N, N Q s s NQ m Nw. W J.. T Q Q\ n1 v\ u L.; w l @u v i m. Nd@ b, .w v n 7 w vm W @w N e IH m N n m Q w v Q N mk/@1K dw N w JWN, V|1/ w m1, du m m 1 Nr N W u w N m. NV imv Patented May 8, 1923.

U l TE D Si 'l' CHARLES L. ntrsron, or conrnsvrrmn, PENNSYLVANIA@ INSPECTION LIFT.

Applicationled .Tune `3,

To all whom t may concern:

Be it known that I, CHARLns L. HUs'roN, a citizen of the United States, residing in Coatesville, Pennsylvania, have invented certain Improvements in Inspection Lifts, of which the following is a specification.

My invention relates to inspection lifts used in connection with the transfer table on which plates are traversed after having been rolled in a rolling mill. These inspection lifts are provided so that an inspector can examine the under side of a plate, as well as the upper side.

One object of my present invention is to provide means whereby each arm of the lift is operated directly from the power mechanism instead of indirectly', as heretofore.

A further object of the invention is to provide an inspection lift which will handle large and heavy plates without certain parts of the lift being subjected to undue strains.

In the accompanying drawings:

Fig. 1 is a side view of the mechanism, illustrating one of the power shafts of the table in section;

Fig. 2 is a plan view of a portion of the table, showing two inspection arms; and

Fig. 3 is a transverse sectional view on the line 3-3, Fig. 2.

While in the drawings, I have illustrated only two inspection arms, it will be understood that these arms can be increased in number according to the widthof the table and the size of the plates to be handled.

1, 1 are suitable foundation structures. 2 are pedestals mounted on the foundations 1. These pedestals support the transverse beams 3 on which are the rails l provided with rolls 5. These rails are placed a given distance apart, as shown in Fig. 2, and located between the rails are chains 6 having rollers 7, which travel on intermediate rails 8, as shown in Fig. 3. 9 is a driving shaft for the chains having sprocket wheels 10, -which engage the chains, as show n. The sprocket wheels are arranged in pairs, as it will be understood that the chains are in sections and the driving shaft 9 drives two seci920. s griai No. scenes.

is .secured the lifting arms andl at'tache'til to this casting are spokes 17 connected to the segments 15, as shown in Fig. 1.

It will be understood that this structure must be very substantial so as to sustain the weight of a plate carried thereby. In the rear end of the lifting arm is a heel 18 against which the lower end of a plate rests when the arm is raised to the position illustrated in dotted lines in Fig. 1. h 19 is a transverse shaft mounted in bearings 20y supported on longitudinal beams 2l carried by the several foundations 1, 11 and 22. On this shaft 19 are pinions 23, which mesh with the teeth of the segments 15. On the shaft is a pinion 24 with which the teeth of a rack 25 mesh, which is attached at one end to a plunger 26 which extends into a cylinder 27v secured to the longitudinal beams 21.

It will be understood that where the table is of considerable width there may be two or more of these cylinders and racks engaging the pinions on the shaft 19. In the present instance the plunger 26 is hydraulically operated and the supply pipe is connected to the rear of the cylinder. Then pressure is applied, the plunger is forcedout and the rack turns the shaft so as to cause the arm to be raised from the position illustrated in full lines in Fig. 1 to that illustrated by dotted lines, or to any intermediate point.

The operation is as follows: After a plate has been rolled it is carried on a suitable roller table to a point where it is transferred onto a cooling table. From the cooling table it is usually directed to the shear table. While on the cooling table it is the general practice to inspect the plate and means is provided for lifting the plate to such an angle that an inspector can examine the under side of the plate, as well as the upper side. When the plate is carried by the endless chain 6 to a point abo-ve the arms 13, pressure is applied to the plunger in the cylinder 27 and the arms are raised, lifting the plate off of the chains 6 and supporting rollers 5. The movement is continued until the arms assume the position illustrated in Fig. 1 and the edge of the plate rests on the heel 18 of the arms. After the inspection has been made, the arms are lowered until the plate again rests on the chains 6, after which it is carried forward clear of the arms and another plate is then moved into position 2. The combination of a table for supfor inspection and the operation is repeated. porting rolled plates; means for traversing I claim: the plates on the table; a plurality of lifting l. The combination of a table for supportarms for lifting a plate oft of the table, each `15 5 ing rolled plates; means Jfor carrying the arm having a toothed segment; a transverse plates over the table; a series of arms ormshaft having pinions meshing with the seg ing an inspection lift, each arm having ments; another pinion on the shaft; a rack toothed segments; a transverse shaft having engaging the last named pinion; a pressure pinons meshing With the teeth of the segcylinder; and a plunger mounted in the eyl- 20 10 ments; and means for turning the shaft to inder and connected to the rack.

raise the arms. CHARLES L. HUSTON. 

